Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6732813 | Method and device of controlling a rock drilling machine | — | 2004-05-11 |
| 4687368 | Thread structure for percussion rock drilling | Harry A. I. Wiredal | 1987-08-18 |
| 4593768 | Hydraulically operated impact device | — | 1986-06-10 |
| 4494614 | Hydraulically operated impact device | — | 1985-01-22 |
| 4413687 | Hydraulically operated impact device | — | 1983-11-08 |